我正在开发一个程序,该程序允许用户使用一个按钮选择文件:
def select_file(self):
filename = tkinter.filedialog.askopenfilename(initialdir=".")
infile = open(filename, "r")
和另一个标记为计数发生的按钮,应将txt文件读入字符串以搜索用户输入的内容:
def count_occurrences(self):
user_file = open(infile, "r")
txt_file = user_file.read()
# (omitted the code for counting occurrences for the sake of relevance)
我不确定问题出在哪个功能上,或者两者兼有。
单击“选择文件”按钮后,标签中会显示目录名称,但是当我在输入搜索文本后单击“出现次数”按钮时,出现错误:
“ user_file = open(filename,” r“)FileNotFoundError:[错误2]没有这样的文件或目录:
任何帮助将不胜感激,谢谢!
答案 0 :(得分:1)
我不确定您的项目代码是什么,但她是解决方案的地方:
from tkinter import *
from tkinter import ttk, filedialog
#import io
class ReadFileApp:
def __init__(self, master):
self.label = ttk.Label(master, text = "How Read a File Content!")
self.label.grid(row = 0, column = 0, columnspan = 2)
ttk.Button(master, text = "Open File",
command = self.select_file).grid(row = 2, column = 0)
ttk.Button(master, text = "Print the Content",
command = self.count_occurrences).grid(row = 2, column = 1)
def select_file(self):
filename = filedialog.askopenfilename(initialdir=".")
self.infile = open(filename, "r")
#self.infile = io.TextIOWrapper(self.infile, encoding='utf8', newline='')
print(self.infile.name)
def count_occurrences(self):
with open(self.infile.name, 'r') as myfile:
txt_file=myfile.read().replace('\n', '')
print(txt_file)
def main():
main = Tk()
app = ReadFileApp(main)
main.mainloop()
if __name__ == "__main__": main()
此代码应该可以正常工作。
您的问题是: 1.本地变量infile对其他功能不可见 2. filedialog函数返回io.TextWrapper类型,因此您需要通过调用infile.name
以字符串形式获取路径。